[sdiy] 4016 madness

[mark verbos]

Hi there!

I'm in the middle of some strange analog switch behavior. I have a buchla module that used an MC14016 in it's oscillator core. It is also switching between waveforms with the other 3 switches. It is powered from +15 and a -5 made from resistors on the -15 and ground. Things are acting funny, so I replaced the switch with a CD4016B and the oscillator stopped working. I put in an NTE4016 and still no oscillation. Both of these chips were showing about +5 as the negative rail. I put back in the old chip and the oscillator started again. The negative power rail went back to -5.

The schematic specifies the Motorola part number MC14016. I have never seen Don specify a Motorola CMOS switch. I don't know if the issue is that it's Motorola or an A vs B series thing. 

I'm in LA right now and can't go home without figuring this out. Does anyone have a Motorola MC14016 (not B) in the LA are that they can float me? Any words of wisdom? Thanks!

Mark



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